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Groups > rec.arts.sf.written > #488631
| From | The Starmaker <starmaker@ix.netcom.com> |
|---|---|
| Newsgroups | rec.arts.sf.written, sci.physics, sci.physics.relativity, alt.astronomy |
| Subject | Re: Does Intelligent Life Exist On Earth? |
| Date | 2018-03-16 14:53 -0700 |
| Organization | Netfront http://www.netfront.net/ |
| Message-ID | <5AAC3CEE.48EA@ix.netcom.com> (permalink) |
| References | <5AAB611D.47AB@ix.netcom.com> <WxUqC.11846$By2.6983@fx30.am4> |
Cross-posted to 4 groups.
Keith Stein wrote: > > On 16/03/2018 06:15, The Starmaker wrote: > > > See what they say. > > Let us, for the sake of argument, assume that i am on a galaxy which is > 10,000,000,000 light years from the earth. By a bit of good > planning i have my laser with me and i shine this laser at you for a > whole year. The front of this laser beam will take exactly > 10,000,000,000 to reach you here on Earth (hopefully you will still be > alive eh!). The rear end of my laser signal will take slightly longer to > reach you because the speed of light has decreased in the year i've been > holding this laser. If light decreases by my suggestion of one part in > 10 billion per year, the rear end of the signal will take exactly > 10,000,000,001 years to reach you here on Earth. > > Thus the light beam from my laser is stretch by a factor of 2 ( because > the end of the beam left 1 year after the start, and took 1 year longer > on the journey.). However the number of waves sent will be exactly the > same as the number received, (assuming you are careful and don't miss > any,) so the wavelength must also have been stretched by a factor of 2. > This is equivalent to a red-shift of 1, and corresponds reasonably well > with what is found in practice, in our observatories. > > Talking Rock eh! A cut-and-paste Rock no doubt... https://groups.google.com/forum/#!original/sci.physics.relativity/XoY9WEeRZLw/TCaNR4MSBgAJ
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Does Intelligent Life Exist On Earth? The Starmaker <starmaker@ix.netcom.com> - 2018-03-15 23:15 -0700
Re: Does Intelligent Life Exist On Earth? T Guy <tim.bateman1961@gmail.com> - 2018-03-16 04:59 -0700
Re: Does Intelligent Life Exist On Earth? The Starmaker <starmaker@ix.netcom.com> - 2018-03-16 09:39 -0700
Re: Does Intelligent Life Exist On Earth? Hägar <hsahm@yahoo.com> - 2018-03-16 09:25 -0700
Re: Does Intelligent Life Exist On Earth? Kevrob <kevrob@my-deja.com> - 2018-03-16 10:18 -0700
Re: Does Intelligent Life Exist On Earth? D B Davis <g@crcomp.net> - 2018-03-16 17:49 +0000
Re: Does Intelligent Life Exist On Earth? "Default User" <defaultuserbr@yahoo.com> - 2018-03-17 16:59 +0000
Re: Does Intelligent Life Exist On Earth? The Starmaker <starmaker@ix.netcom.com> - 2018-03-17 10:53 -0700
Re: Does Intelligent Life Exist On Earth? Kevrob <kevrob@my-deja.com> - 2018-03-17 13:08 -0700
Re: Does Intelligent Life Exist On Earth? "Default User" <defaultuserbr@yahoo.com> - 2018-03-17 23:46 +0000
Re: Does Intelligent Life Exist On Earth? The Starmaker <starmaker@ix.netcom.com> - 2018-03-17 16:55 -0700
Re: Does Intelligent Life Exist On Earth? Keith Stein <keithstein111@gmail.com> - 2018-03-16 19:03 +0000
Re: Does Intelligent Life Exist On Earth? The Starmaker <starmaker@ix.netcom.com> - 2018-03-16 14:53 -0700
Re: Does Intelligent Life Exist On Earth? The Starmaker <starmaker@ix.netcom.com> - 2018-03-16 21:21 -0700
Re: Does Intelligent Life Exist On Earth? Keith Stein <keithstein111@gmail.com> - 2018-03-16 19:12 +0000
Re: Does Intelligent Life Exist On Earth? The Starmaker <starmaker@ix.netcom.com> - 2018-03-16 15:15 -0700
Re: Does Intelligent Life Exist On Earth? Keith Stein <keithstein111@gmail.com> - 2018-03-16 23:02 +0000
Re: Does Intelligent Life Exist On Earth? The Starmaker <starmaker@ix.netcom.com> - 2018-03-16 21:33 -0700
Re: Does Intelligent Life Exist On Earth? Keith Stein <keithstein111@gmail.com> - 2018-03-19 08:45 +0000
Re: Does Intelligent Life Exist On Earth? The Starmaker <starmaker@ix.netcom.com> - 2018-03-19 09:22 -0700
Re: Does Life Exist On Earth? The Starmaker <starmaker@ix.netcom.com> - 2018-03-23 10:46 -0700
Re: Does Life Exist On Earth? The Starmaker <starmaker@ix.netcom.com> - 2018-03-24 10:21 -0700
Re: Does Life Exist On Earth? The Starmaker <starmaker@ix.netcom.com> - 2018-03-25 00:54 -0700
Re: Does Life Exist On Earth? The Starmaker <starmaker@ix.netcom.com> - 2018-03-25 00:59 -0700
Re: Does Life Exist On Earth? The Starmaker <starmaker@ix.netcom.com> - 2018-03-25 20:48 -0700
Re: Does Life Exist On Earth? The Starmaker <starmaker@ix.netcom.com> - 2018-03-26 00:06 -0700
Re: Does Life Exist On Earth? The Starmaker <starmaker@ix.netcom.com> - 2018-03-26 19:00 -0700
Re: Does Life Exist On Earth? The Starmaker <starmaker@ix.netcom.com> - 2018-03-27 10:37 -0700
Re: Does Life Exist On Earth? The Starmaker <starmaker@ix.netcom.com> - 2018-03-27 15:51 -0700
Re: Does Life Exist On Earth? The Starmaker <starmaker@ix.netcom.com> - 2018-03-27 23:30 -0700
Re: Does Intelligent Life Exist On Earth? "hanson" <hanson@quick.net> - 2018-03-22 13:29 -0700
Re: Does Intelligent Life Exist On Earth? Keith Stein <keithstein111@gmail.com> - 2018-03-23 01:41 +0000
A more considered response to Mr.Hanson Keith Stein <keithstein111@gmail.com> - 2018-03-25 11:00 +0100
Re: A more considered response to Mr.Hanson "hanson" <hanson@quick.net> - 2018-03-25 13:26 -0700
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